Machine for turning brake drums and the like



June 24, 1930. J. E". BATIE ,7 6,210

MACHINE FOR TURNliNG BRAKE DRUIIS AND THE LIKE Filed Oct. 12, 1925 sSheets-Shem 1 INVENTOR. Jae/w'. 5/97/15 7 A TTORNEYJ June 24, 1930. .1.E. BATIE 6,210

MACHIQE FOR TURNING BRAKE DRUMS AND THE LIKE Filed Oct. 12, 1925 3Sheets-Sheet 2 m v I .-1 TTORNE Y6 June 1930- J. E. BATEE L7 ,i@

MACHINE FOR TURNING BRAKE DRUMS RED THE LIKE Filed Oct. 12, 1925 3Sheets-Sheet 3 m 'LiwoR. J2; EPA i 5/) 7/5 Patented June 24, 1930 UNITEDSTATES :rosErH E. BATIE; or DETROIT, MICHIGAN, ASSIGNOR TO KELSEY-HAYESWHEEL'COR- PORATION, OF DETRQIT, MICHIGAN, A CQRPORATION OF MACHINE FORTURNING BRAKE nnuus AND THE LIKE Application filed October 12, 1925.Serial No. 62,124.

The invention relates to machines for turning brake drums and has forone of its objects the provision of a machine which is so arranged thatthe brake drum may be mounted upon an end of the driving arbor. Anotherobject is the provision of a machine in which the means for moving thecutter of the brake drum is arranged concentric with the driving arborand furthermore driven from this driving arbor. Further objects are theprovision of a pair of transversely movable cutters for the brake drumand a common means for moving these cutters; the provision ofa supportupon which one of the cutters is movably mounted and means for movingthe support to move the cutter across and in engagement with the brakedrum and for moving the cutter relative to the support and away from thebrake drum; and the provision of driving means for the cutter actuatingmember, including reduction gearing and a clutch, the latter of whichmay be \thrown out to permit manually returning the actuating member tostarting position.

' With these as well as other objects inview the invention resides inthe novel features of construction and combinations and ar-;

rangements of after set forth.

In the drawings I Figure 1 is a side elevation of abrake drum turningmachine embodying my invention V v Figure 2 is a cross section on theline 2-2 parts as more fully hereinof Figure 1; A

FiguresB, 4, 5 and 6 are cross sections on the lines 3-3, 4-4, 5-5 and6-45 of Figure 2. I

The brake drum turning machine has the bed 1 and the table 2 supportedabove" the bed by means of the uprights 3.: 4' is the revoluble drivingarbor w ich supports at its front end the vehicle wheel 5 having thebrake drum 6, this arbor being journaled 1n the bearings 7 mounted uponthe table 2. These bearings are spaced longitudinally of the arbor andthe front bearing is located adjacent to the front end of the arbor forholdingthe latter true and thereby mam taining as nearly true revolutionof'the vehicle wheel and itsbrake drum as possible.- The arborA isrotated by suitable means and as shown in the present instance thismeans comprises the "electric motor 8 mounted upon the bed 1 andconnected to the coun-" tershaft 9 b means of suitable reduction gearingin t e housing 10 and the belt 11 extending between this reductiongearing and the drive shaft of the electric motor. The countershaft isconnected to the arbor by means of the belt 12 which runs aroundsuitable pulleys secured to the counter shaft and the arbor, the pulleyupon the arbor being at the rear end thereof and'outwardly beyond therear bearing 7. t J

For turning the brake surface of the brake flange 13 of the brakedrum,this brake surface being in the present instance the ex ternal surface Ihave providedthe cutter or tool 14, which is inclined so that itscutting edge' may engage the external surface of the brake flangewhichis normally surrounded by the wheel -felly. This cutter is secured tothe holder 15 which is pivotally mounted at 16 upon the front end of thebar 17. This bar is guided by the spaced brackets 18 which are PATENTorrlca 1 NEW YORK Y the inner portion of mounted upon the table 2, andis reciprocable in a direction parallel to the axis of the arbor 4:. Fornormally holding the cutter in operative relation to the-brake flangethere is the bar 19 slidablylengagehble in the longitudinally extendingslot 20 in'the bar 17 and having secured to itsfront end the adjustableset screw 20', which is 'engfl 1 J able with the rear end of the holder15 at apoint offsetfrom the pivot 16. 21 is a rollermounted' upon therear end of the bar 19' and normally engaging the raised or forwardlyofi'set face 22 of the trip 23', which is transversely slidably mountedin the bar 17. front end of the bar 17 and adapted to engage the rearsurface of the holder 15 offnormally rotating the holder and thereby 24is a coil spring mounted in the' 'i moving the cutter away fromthe'brake flange.

For moving the cutter 14 across the brake as set on the opposite side ofthe pivot 16 for i Y I 7 front ends to ends to the rearfbracket 18. Thecam 18 also provi ded with a pair of diametrically opposite outwardlyvextending forming cam'sur aces engageable with the roller 32 upon theinner end ofthe trip .23

ata time when the bar 17 has com leted its forward travel. These cam suraces are adapted to. force the trip 23 laterally outi f ofiset face 22of .the trip from allowing'the latter For revolving to disengage theraised or forwardly the roller 21, with the bar 19 to move under theforce exerted by the 24'through the cutter holder 15, cutter 14 awayfrom and wardly rearwardly coil spring thereby. moving the out ofengagement The trip remains in its lateral outward position until thebar 17 returns to its original gpls'ition so that the cutter will notmar the ish of thebrake flange.

the return movement of the final portion of 0 thebar17 7 is then forcedlaterally inward by means of the stationary pin 23 engaging -thecamsurface 22 of the trip.

the worm wheel'33 secured to the rear face of the cam and meshing withthe worm 34 located below the worm wheel and secured upon the" shaft 35,"which extends transverselypf-tlie table and is journaled therein.

The hand crank 36 is provided at: one end of this shaft and beyond thetablefor manually rotating the shaft. Furthermore the v shaft may berotated from the arbor 4 by means which may be disconnected from theshaft to allow the manual rotation thereof. In detail 37 is a countershaft extending parallel to the arbor and mounted upon the table. Atone'end ofthis counter shaft there is the pulley 38 the ot er end of thebelt running over the arbor. The counter shaft 37 is connected to thestub shaft 38" which extends in alignment with the shaft and isiournaled in the table by means 1 of gearing 39'. 40 is a clutchfor-operatively connecting the shaft 38' to the'shaft 35, this clutchbeing operated by sultable'means such as the-lever 41 --'table as thehandle 36.

and rod 42, the latter having 'a handle 43'located on the same side ofthe With this arrangement it will be seen that if desired the cam to thebar 17 v 27 and connecting plane surfaces28 during the bar 17 and attheir rear projections 31' dwells 28. With this with the brake flange13;

The trip during the cam 25 I haveiprovided' over which runs the belt 39,

snitab e reduction 25 may be mechanically driven from the arbor 4 or itmay be manually'driven independently of the driving connection betweenthe cam and the arbor. tageous arrangement inasmuch as the cam may bemechanically rotated at a low rate during the turning operation of thebrake flange and may then be brought to starting osition manually and ata highrate.

44 is a second cutter which is movable tran'sversly of the edge of thebrake flange to trim the same. This cutter is adjustably mounted-uponthe slide 45 which is movable transversely of the table in the guide46.1 47 is a bell crank pivotallymounted upon the table and having onearm c nnected to the slide 45 and the other arm" connected to the slide48 mounted upon and guidedhy the table in adirection'parallel to-theaxis of the arbor. This slide 48 has secured thereto the roller 49 whichis posite the roller be seen that the cam controls the operation of bothcutters 14 and away from the brake flange during the re turn movement ofthe cutter. v

For the purpose of automatically stopping rotation of;the cam 25 I haveprovided the electric switch 50 which controls the operationof theelectric motor 8. 51 is a pivoted dog suitably mounted upon the table ofthe machine and having one arm adapted to engage the push button 52 ofthe switch 50 and the other arm adapted to engage a cam surface upon thecam 25, this cam surface being in the present instance either of the camsurfaces provided by the projections 31. The arrangement is such thatduring the rotation of the cam 25 the dog is swung to move its arm awayfrom the push button 52 and then released allowing this arm to come intocontact' with the push button with sufficient force to depress the same.A coil spring 53 is preferably provided for assistmg in moving the dogwith suflicient force to depress the push being, however, insufiicientto depress the push button without swinging of the dog under gravity.

In operation the electric switch 50 is preferabl actuated to stoprotation of the cam returned to their original or starting posilocateddiametrically ops 1 button, this coil spring.

This is an advan- 29 and is also engageable" with the cam surfaces 26and 27 and the arrangement it will 1 a0 44. Also that this cam controlsthe movement of the cutter .14 I

the assistance of the tions by means of the crank 36, at which time therollers 29 and 49have moved from the dwells to the inclined cam surfacesof the a bar, means to its normal position. This trip is preferablyspring actuated so that its roller 32 will be held against the cam.

What I claim' as my invention is:

1. In a machine for turning brake drums and the like, the combinationwith a revoluble arbor adapted to receive a brake drum, of areciprocable bar movable parallel to the axis of the arbor, a cutteran'dcutter holder pivotally mounted upon said bar, means for normally urgingsaid cutter away from the brake drum, said means-including a yieldablemember associated with said bar and engageable with the cutter holder atone side of the pivotal connection thereof to said bar, and means forholding the cutter into engagement with said drum including a memberenga cable with said holder at a point spaced IOIIl the point of contactbetween said yieldable member and holder and upon the opposite side ofth pivotal connection aforesaid.

2. In a brake drum turning machine, the combination with a-revolublearbor adapted to receive a brake drum at one end thereof, of areciprocable bar movable parallel to the axis of said brake drum, acutter for the brake drum movably mounted upon said bar, a revoluble camconcentric with said arbor, means cooperating with said camfor actuatingsaid bar to move said cutteracross and in engagement with the brake drumand means cooperating with said cam for movin said cutter relative tosaid bar to move said cutter away from the brake drum.

3. In a brake drum turning machine, the

combination with a revoluble arbor adapted to receive a brake drum atone end thereof, of a reoiprocable bar movableparallel to the axis ofsaid brake drum, a cutter for the brake drum, a holder for said cutterpivotally mounted upon the forward end of-said bar, a cam for movingsaidcutter across the brake drum and for automatically stopping rotation ofsaid arbor, and means for normally holding said cutter in operativerela-' tion to said brake drum.

4. In a brake drum turning machine, the combination with a revolublearbor adapted to receive a brake drum at one end thereof, of areciprocable bar movable parallel to the axis of said brake drum, acutter for the brake drum, a holder for said cutter pivotally mountedupon the forward end of said for actuating said bar to move said cutteracross and in engagement with the brake drum, means for normally holdingthe cutter in operative relation to the brake drum including a barslidably mounted in said first mentioned bar and engaging said holderofiset from the pivotal connection thereof to said first mentioned bar,and

means associated with said first mentioned bar and adapted to engagesaid cutter holder ofi'se't upon the, opposlte sideof'the pivotalconnection aforesaid, tending to rotate the: holder-vaway from and out,of engagement with the brake drum,

5. In a brake. drum turning machine,"'the combination with a revolublearbor adapted to receive a brake drum atoneendthereof,

of a reciprocable bar movable parallel to the axis of the arbor having alongitudinally ex tending slot therein, ajcutter" tor; the brakeholderffor said cutter pivotall'y mounted upon's'aid' bar, means'tormoving saidbar tomov'e' the cutter acro'ssfand'in en gagement with thebrake drum, ana ea'ns; for normally holding'said cutter in opera tiverelation to said brake drum including a bar slidablyengageable in thelongitudinallyextending slot" 'aforesaid and" having awn, a

one, end fadjustablesecured to thejcutter ,6, In a brakedrum-turningmachine, the 5 combination with a revoluble arbor adapted toreceive a brake druinat one end thereof; of a reciprocable bar movableparallel to' the axis of-the arbor having a longitudinal-3 ly extendingslot therein, a cutter. tor the" brake drum, a holder for said "cutterpi'v otally"mounted upon said bar, a"-'revoluble" cam concentric with'said arbor. for moving said cutter across the brakedrrimfa second" barslidably engagea'ble in the 'longitu'di nally extending "slot aforesaid;having the forward end thereof; engaging the cutter holder offset from-tl1e'pivotal connection between'the holder and first mentioned bar' fornormally holdin the cutter inoperative' relation to the bra e"drum,-acoil spring" mounted inthe'forward "end of said first mentioned bar andadapted-to engage the cutter holder at a said, tendin upon said camoperable at a time when the first mentionedbar has completed its for-'ward travel to disengage the member 'aforesaidfrom the second mentionedbar, allowing the latter to move rearwardly, thereby moving the cutteraway from and out of engagement with the brake drum.

7. n' a brake drum turning machine, the combination with a revolublearbor adapted to receive a brake drum at one end thereof, of a barreciprocable in a direction parallel to theaxis of the brake drum, acutter and a holder therefor pivotally mounted upon said bar, and camcontrolled means for reciprocating said bar and for rocking saidointoil'set on the '0 p0: site side of the. pivotal connection a oretorotate the cutter holder away from t e brake drum, a member slid ablymounted in said first mentioned bar cuttter holder about the pivotalconnection aforesaid to move said cutter away from the brake drum.

8. In a machine .of the character described, the combination with arevoluble arbor adapted to receive the work, of a member movablerelative to said arbor, a cutter holder pivotally mountedupon said-member, and a single cam member upon said arbor for actuating themember aforesaid and also for rocking said holder about the pivotalconnection between said first mentioned member and cutter holder to movethe cutter away from the work at the completion ofthe cutting operation.

9. In a,- machine of the character described, the combination with arevoluble l arbor adapted tobrec eive the work, of a cutter for thework, means for actuating the cutter including a member movable relativeto said arbor, ,a pivotally mounted holder for said cutter and meansupon said arbor for actuating the member aforesaid tially movin'g thecutteriaway from the work at andfor, rocking said holder about thepivotal connection thereof in a plane substan- Parallel to the axis ofthe arbor for the completion of the cutting operation.

- 10. In a machine of the character del- I scribed, the. combinationwith a revoluble the arbor,

,ggup'on said arbor for reciprocating said mem- :,ber.and also forrockingthe cutterholder about the pivotal connection thereof ina planesubstantially parallel to the axis of the arbor for moving the cutteraway from the work at the completion of the cutting operation.In'testimony whereof I afii x my signature. Y JOSEPH E. BATIE.

ivotally mounted.

